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Finding the Fourth Proportional to 394,418.57, 544,297.55 and 213,130.49

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Solution

The fourth proportional to 394,418.57, 544,297.55 and 213,130.49 is: 294,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,418.57 : 544,297.55 = 213,130.49 : x
  2. Step 2: Convert to fraction form
    394,418.57/544,297.55 = 213,130.49/x
  3. Step 3: Cross multiply
    394,418.57x = 544,297.55 × 213,130.49
  4. Step 4: Simplify right side
    394,418.57x = 116,006,399,750.16
  5. Step 5: Solve for x
    x = 116,006,399,750.16/394,418.57
  6. Step 6: Final answer
    x = 294,120.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.